Potential of Luffa cylindrica seed as coagulation-flocculation (CF) agent for the treatment of dye wastewater: Kinetic, mass transfer, optimization and CF adsorption studies

Nnaji, P.C.; Anadebe, Chika; Ezemagu, I.G.; Onukwuli, O. D.

doi:10.1016/j.arabjc.2021.103629

Cited by 54 publications

(11 citation statements)

References 43 publications

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“…Chemical treatments include methods such as oxidation processes [ 18 , 19 , 20 ], ozonation [ 21 , 22 ], electrochemical destruction [ 23 , 24 ], photocatalysis [ 25 , 26 , 27 ], etc. In terms of physical techniques, coagulation-flocculation [ 28 , 29 ], membrane filtration [ 30 ], nanofiltration [ 31 ], precipitation [ 32 , 33 ], etc., can be cited. Even though, on occasion, satisfactory results were obtained when combinations of biological, chemical, and physical methods were used [ 34 , 35 ], many of these methods are ineffective for some colored compounds.…”

Section: Introductionmentioning

confidence: 99%

Performance of Dye Removal from Single and Binary Component Systems by Adsorption on Composite Hydrogel Beads Derived from Fruits Wastes Entrapped in Natural Polymeric Matrix

Grigoraș

Simion

Favier

et al. 2022

Gels

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The treatment of contaminated water is currently a major concern worldwide. This work was directed towards the preparation of a composite hydrogel by entrapping cherry stones powder on chitosan, which is known as one of the most abundant natural polymers. The synthesized material was characterized by scanning electron microscopy, by Fourier transform infrared spectroscopy, and by the point of zero charge determination. Its ability to remove two azo dyes models (Acid Red 66 and Reactive Black 5) existing in single form and in binary mixture was evaluated. Response Surface Methodology–Central Composite Design was used to optimize three parameters affecting the process while targeting the lowest final contaminant concentrations. The best results were obtained at pH 2, an adsorbent dose of 100 g/L, and a temperature of 30 °C, when more than 90% of the pollutants from the single component systems and more than 70% of those of the binary mixtures were removed from their aqueous solutions. The adsorption process was in accordance with Elovich and pseudo-second-order kinetic models, and closely followed the Freundlich and Temkin equilibrium isotherms. The obtained results led to the conclusion that the prepared hydrogel composite possesses the ability to successfully retain the target molecules and that it can be considered as a viable adsorbent material.

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Section: Introductionmentioning

confidence: 99%

Performance of Dye Removal from Single and Binary Component Systems by Adsorption on Composite Hydrogel Beads Derived from Fruits Wastes Entrapped in Natural Polymeric Matrix

Grigoraș

Simion

Favier

et al. 2022

Gels

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show abstract

“…4,5 Common methods for removing dyes include membrane ltration, solar photo-oxidation, coagulation, ion exchange, and photocatalytic. [6][7][8][9][10] However, these approaches have several drawbacks, including limited selectivity, low recovery, and signicant operating and maintenance expenses. Adsorption is one of the most effective dye removal strategies because of its high efficiency, simple design and operation, low cost, and shortened processing time.…”

Section: Introductionmentioning

confidence: 99%

Selective adsorption of anionic and cationic dyes on mesoporous UiO-66 synthesized using a template-free sonochemistry method: kinetic, isotherm and thermodynamic studies

et al. 2023

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“…Against this backdrop, it became necessary to search for alternative wastewater purification reagents that are cheap, locally available, and environmentally friendly. Some of the bioadsorbents that have been reported are rubber seed shell [12], Luffa cylindrica seed [13], coconut fibre [14] and maize cob [15]. In this work, Gossweilerodendron caesalpinoideae stem waste is being proposed as a novel precursor for activated carbon production for the removal of pollutants from a real fibre-cement industry effluent.…”

Section: Introductionmentioning

confidence: 99%

Adsorption treatment of fibre-cement industry effluent by activated gossweilerodendron caesalpinoideae stem waste: kinetic and thermodynamic studies

Ani

Agbo

Odewole

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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This investigation is on the treatment of a fibre-cement industry effluent (FCIE) using activated carbon (AC) adsorbent prepared by chemical activation (60% phosphoric acid) of Gossweilerodendron caesalpinoideae (GC) stem waste. The GCAC adsorbent was characterized by determination of the proximate and functional properties. The chemical groups, morphology and mineral phases of the GC stem waste and GCAC were studied by FTIR, SEM, and XRD methods, respectively. Kinetic and thermodynamic studies were carried out using total dissolved solids (TDS) as evaluating parameter. Effects of adsorbent dosage (5-40 g/L), contact time (0-60 min), and temperature (20-40 °C) on the effluent decontamination were investigated. Results from the characterized supernatant showed up to 97% removal of the contaminants using 40 g/L of GC adsorbent at effluent pH 7.4. The concentrations of TDS obtained by U-V spectrophotometric analysis were fitted to pseudo-first and pseudo-second order, Elovich and intraparticle kinetic models. The adsorption followed the pseudo-second order rate equation. Obtained free energy and enthalpy of adsorption values indicated non-spontaneous and endothermic adsorption. The study affirmed that the bioadsorbent, GCAC can be used for FCIE treatment.

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Potential of Luffa cylindrica seed as coagulation-flocculation (CF) agent for the treatment of dye wastewater: Kinetic, mass transfer, optimization and CF adsorption studies

Cited by 54 publications

References 43 publications

Performance of Dye Removal from Single and Binary Component Systems by Adsorption on Composite Hydrogel Beads Derived from Fruits Wastes Entrapped in Natural Polymeric Matrix

Performance of Dye Removal from Single and Binary Component Systems by Adsorption on Composite Hydrogel Beads Derived from Fruits Wastes Entrapped in Natural Polymeric Matrix

Selective adsorption of anionic and cationic dyes on mesoporous UiO-66 synthesized using a template-free sonochemistry method: kinetic, isotherm and thermodynamic studies

Adsorption treatment of fibre-cement industry effluent by activated gossweilerodendron caesalpinoideae stem waste: kinetic and thermodynamic studies

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